Geodetic CRS: CGVD28 height
Datum: Canadian Geodetic Vertical Datum of 1928
Data source: EPSG
Information source: Geodetic Survey Division, Natural Resources Canada.
Revision date: 2024-10-09
Scope: Change of height to a different vertical reference surface.
Remarks: Null transformation. CGVD28 is defined by the levelling network. CGVD28(HTv2.0) is defined by the Height Transformation (HT) v2.0 hybrid geoid model at epoch 1997.0 (transformation from NAD83(CSRS)v3 to CGVD28, CT code 9983).
Method: Vertical Offset
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["CGVD28 height to CGVD28(HTv2.0) height (1)", VERSION["NR-Can HT2 1997"], SOURCECRS[ VERTCRS["CGVD28 height", VDATUM["Canadian Geodetic Vertical Datum of 1928"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5713]]], TARGETCRS[ VERTCRS["CGVD28(HTv2.0) height", VDATUM["Canadian Geodetic Vertical Datum of 1928 (Height Transformation version 2.0)", ANCHOREPOCH[1997]], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",10588]]], METHOD["Vertical Offset", ID["EPSG",9616]], PARAMETER["Vertical Offset",0, LENGTHUNIT["metre",1], ID["EPSG",8603]], OPERATIONACCURACY[0.05], USAGE[ SCOPE["Change of height to a different vertical reference surface."], AREA["Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon."], BBOX[41.67,-141.01,69.81,-52.54]], ID["EPSG",10620], REMARK["Null transformation. CGVD28 is defined by the levelling network. CGVD28(HTv2.0) is defined by the Height Transformation (HT) v2.0 hybrid geoid model at epoch 1997.0 (transformation from NAD83(CSRS)v3 to CGVD28, CT code 9983)."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "CGVD28 height to CGVD28(HTv2.0) height (1)", "source_crs": { "type": "VerticalCRS", "name": "CGVD28 height", "datum": { "type": "VerticalReferenceFrame", "name": "Canadian Geodetic Vertical Datum of 1928" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5713 } }, "target_crs": { "type": "VerticalCRS", "name": "CGVD28(HTv2.0) height", "datum": { "type": "VerticalReferenceFrame", "name": "Canadian Geodetic Vertical Datum of 1928 (Height Transformation version 2.0)", "anchor_epoch": 1997 }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 10588 } }, "method": { "name": "Vertical Offset", "id": { "authority": "EPSG", "code": 9616 } }, "parameters": [ { "name": "Vertical Offset", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8603 } } ], "accuracy": "0.05", "scope": "Change of height to a different vertical reference surface.", "area": "Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon.", "bbox": { "south_latitude": 41.67, "west_longitude": -141.01, "north_latitude": 69.81, "east_longitude": -52.54 }, "id": { "authority": "EPSG", "code": 10620 }, "remarks": "Null transformation. CGVD28 is defined by the levelling network. CGVD28(HTv2.0) is defined by the Height Transformation (HT) v2.0 hybrid geoid model at epoch 1997.0 (transformation from NAD83(CSRS)v3 to CGVD28, CT code 9983)." }
Definition: Mapnik
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